/*
 * Copyright Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags and
 * the COPYRIGHT.txt file distributed with this work.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.teiid.net.socket;

import java.util.List;
import java.util.Properties;

import org.teiid.net.HostInfo;
import org.teiid.net.TeiidURL;


/**
 * Simple URL discovery strategy with a random load balancing policy
 * TOOD: add black listing support
 */
public class UrlServerDiscovery {

    private TeiidURL url;

    public UrlServerDiscovery() {
    }

    public UrlServerDiscovery(TeiidURL url) {
        this.url = url;
    }

    public List<HostInfo> getKnownHosts() {
        return url.getHostInfo();
    }

    public void init(TeiidURL url, Properties p) {
        this.url = url;
    }

    public HostInfo selectNextInstance(List<HostInfo> hosts) {
        return hosts.remove((int) (Math.random() * hosts.size()));
    }

}
